Quantifying bone compaction and implant-bone contact in uncemented total hip arthroplasty through μCT and digital volume correlation: A cadaveric study.

IF 7 2区 医学 Q1 BIOLOGY
Computers in biology and medicine Pub Date : 2025-01-01 Epub Date: 2024-11-30 DOI:10.1016/j.compbiomed.2024.109474
Vineet Seemala, Mark A Williams, Richard King, Sofia Goia, Paul F Wilson, Arnab Palit
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引用次数: 0

Abstract

Background: The stability of uncemented implants during total hip arthroplasty (THA) depends on bone compaction and the bone-implant contact area achieved during the surgical process, particularly during broaching and implantation. However, the evaluation of these factors in actual hip is limited through experimental studies. Therefore, the aim of this study was to quantify bone compaction, and the bone-implant contact area achieved during uncemented THA through a μCT-based cadaveric study of three femur samples.

Methods: Three cadaveric femur samples underwent uncemented THA, with μCT scans conducted at intermediate surgical steps. The bone compaction resulting from the surgical process was quantified using two parameters: (a) displacement and strain induced using Digital Volume Correlation (DVC), (b) changes in bone volume fraction (BV/TV) around the bone-implant interface. Furthermore, the bone-implant contact, and its location were evaluated, including an assessment of the robustness and sensitivity of the measurements.

Results: The DVC showed that the trabecular bone deformed plastically, with a displacement of 0.09 ± 0.13 mm, a Von-Mises strain of 7082.28 ± 9162.73 με due to the surgical process. Broken trabecular bone accumulated around the bone-implant interface, increasing BV/TV from 3.31 % to 20.69 %. Bone-implant contact (BIC) was limited, ranging from 3.05 % to 5.22 %, but 75.26 %-82.27 % of the maximum potential contact area (PBICA) was achieved. All samples established a three-point contact, and sensitivity analysis revealed a robust BIC calculation with minimal variability of ±0.87 %.

Conclusion: The findings offer important insights into bone-implant behaviour during the uncemented THA process. These insights could be useful for physics-based pre-surgical planning to evaluate the stability of uncemented implants and help surgeons choose the most appropriate implants for their patients.

利用μCT和数字体积相关技术量化非骨水泥全髋关节置换术中骨压实和植骨接触:一项尸体研究。
背景:全髋关节置换术(THA)中非胶结假体的稳定性取决于手术过程中骨压实和骨-假体接触面积,特别是在拉拔和植入过程中。然而,通过实验研究对这些因素在实际髋关节中的评价是有限的。因此,本研究的目的是通过μ ct对三个股骨样本的尸体研究,量化骨压实度,以及非骨水泥THA期间骨-种植体接触面积。方法:3例尸体股骨标本行非骨水泥THA,在手术中间步骤进行μCT扫描。手术过程中产生的骨压实通过两个参数进行量化:(a)使用数字体积相关(DVC)引起的位移和应变,(b)骨-种植体界面周围骨体积分数(BV/TV)的变化。此外,对骨-种植体接触及其位置进行了评估,包括对测量的鲁棒性和灵敏度的评估。结果:DVC显示骨小梁发生塑性变形,移位量为0.09±0.13 mm, Von-Mises应变为7082.28±9162.73 με。骨折的骨小梁在骨-种植体界面周围聚集,BV/TV从3.31%增加到20.69%。骨-种植体接触面积(BIC)有限,范围为3.05% ~ 5.22%,但最大潜在接触面积(PBICA)达到75.26% ~ 82.27%。所有样品都建立了三点接触,敏感性分析显示,BIC计算的最小变异性为±0.87%。结论:研究结果对非骨水泥THA过程中骨植入物的行为提供了重要的见解。这些见解可以用于基于物理的术前计划,以评估非骨水泥种植体的稳定性,并帮助外科医生为患者选择最合适的种植体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Computers in biology and medicine
Computers in biology and medicine 工程技术-工程:生物医学
CiteScore
11.70
自引率
10.40%
发文量
1086
审稿时长
74 days
期刊介绍: Computers in Biology and Medicine is an international forum for sharing groundbreaking advancements in the use of computers in bioscience and medicine. This journal serves as a medium for communicating essential research, instruction, ideas, and information regarding the rapidly evolving field of computer applications in these domains. By encouraging the exchange of knowledge, we aim to facilitate progress and innovation in the utilization of computers in biology and medicine.
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